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Cometic MLS cylinder head gasket for the GM L18 Vortec 8100 Gen‑VII Big Block V8, .066in compressed thickness with a 4.280in bore for the left side. Built from multiple embossed stainless steel layers with Viton-coated outer faces, it resists corrosion and handles mixed-material head-to-block interfaces. The uncoated center shim accommodates thickness choices and the MLS construction reduces clamp load while improving overall sealing reliability without sealants.
Cometic GM L18 Vortec 8100 Gen-VII Big Block V8 .066in MLS Cylinder Head Gasket - 4.280in Bore - LHS
